Fatigue Performance of Recycled Asphalt Mixtures: Viscoelastic Continuum Damage Approach and Cost Analysis

This study aims to evaluate the fatigue phenomenon in recycled hot asphalt mixture for an surface layer. Eight mixtures were evaluated laboratory, and samples divided into two major groups: four containing neat binder RAP from source 1 (RAP with binder) SBS-modified 2 binder). The levels of incorporation 0%, 10%, 20%, 30% relation total weight mixtures. followed Marshall mix design methodology. results indicate that polymer-modified presented better performance, whereas addition slightly decreased resistance cracking. In terms economic analysis, use RAP, all cases, leads a reduction production costs due aggregate added, savings up 14.1% case SBS binder. When evaluating impact inserting its relationship performance long term, it can be observed type added impacts results: present gains within acceptable quality parameters insertion; binder, percentage 10% is advantageous.